CN1288086A - Processing art for inhibiting turning to yellow of high yield baeached pulp and and paper products contg. same - Google Patents
Processing art for inhibiting turning to yellow of high yield baeached pulp and and paper products contg. same Download PDFInfo
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- CN1288086A CN1288086A CN 99114433 CN99114433A CN1288086A CN 1288086 A CN1288086 A CN 1288086A CN 99114433 CN99114433 CN 99114433 CN 99114433 A CN99114433 A CN 99114433A CN 1288086 A CN1288086 A CN 1288086A
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Abstract
A technique for suppresing the yellowing of high-output bleached paper pulp, paper and paperboard, which are made of fast-growing wood features that a single or combined process and the invented chemical are used to treat said products by spray, cooting, or immersing to improve their optical ageing resistance.
Description
The present invention relates to the improvement that high lignin content paper pulp and paper product are easy to the shortcoming of aging brightness reversion, particularly to saving timber, improves high yield wood pulp utilization benefit and improves the improvement of paper and board product ageing-resistant performance.
At present, pulping process mainly contains the main type of two classes; The one, chemical pulping, another is high yield mechanical feedback; Because mechanical feedback yield height is doubled to timber utilization rate, but therefore Mechanical Method paper pulp be easy to light, heat ageing and brightness reversion owing to being main feature with high lignin content, limited its range of application.However, high-yield pulp is still developing with fast speeds.
The objective of the invention is to by researching and developing out economic and practical inhibition high yield pulp and joining light, heat ageing and the brightness reversion of copying product, being beneficial to high yield pulp maximizes favourable factors and minimizes unfavourable ones, promote the high yield pulp technology rapid development, improve product quality, improve the enterprises in pulp and paper industry economic benefit, cut down the consumption of raw materials, reduce the key technology of environmental pollution.Potential economy, society, environmental benefit are very big.
The object of the present invention is achieved like this:
(1) the high yield bleached pulp of fast growing wood reduces processing under aqueous medium, reductant 0.05～1%, pH value 7～9, concentration 10～20%, 50～80% ℃ of temperature, 20～80 minutes time, chelating agent, stabilizing agent 0.01～0.1%.
(2) in stock tank, add ultraviolet absorber 0～1.0%, nitrogen oxygen-cent red radical 0～1.0%, the mixing water of antioxidant 0～2.0% and PH buffer or solvent solution or when pulpboard and paper product are manufactured paper with pulp spray, coating, dipping, dry same common process.
(3) pulpboard or paper product carry out gas chemistry modification processing, and adopting organic acid anhydride, buffer ammonium salt is medicament.
Above method can be according to the ageing-resistant brightness reversion performance requirement of different pulp products separately or be used.
Handle by the technology of the present invention, it is anti-aging and suppress the brightness reversion performance and improved significantly that the high yield wood pulp of fast growing wood or join is copied product.
Further set forth the present invention below by example.
Example one:
High yield bleached wood pulp is handled the improvement situation of back photooxidation aging property by reduction
Example two:
100% high yield pulp is copied the paper of system, adopts prescription coating of the present invention back anti-light aging performance improvement situation
* dissimilar (water-soluble or organic solvent types)
Example three:
After paper pulp reduction is handled, manufacture paper with pulp into paper product and adopt the present invention's coating back anti-light aging performance improvement situation of filling a prescription
Claims (4)
1. one kind is applicable to and utilizes high-yield pulp to join a technology and an additive formulations that second bleached paper product suppresses the photo-thermal brightness reversion, it is characterized in that:
(1) is applicable to high yield bleached mechanical pulp such as BCTMP, APMP and bleaching GP.Join preventing aging and suppressing the brightness reversion requirement of all paper products of copying;
(2) prescription: UV absorbers 0～1.0%
Nitrogen oxygen-cent red radical 0～1.0%
Antioxidant 0～2.0%
Reductant 0.05～1%
(3) using method
High-yield pulp is handled through reductant, reductant 0.05～1%PH value 7～9, and concentration 10～20%, 50～80 ℃ of temperature, can be improved the anti-brightness reversion effect of paper pulp at 20～80 minutes time.
When copying system high-yield pulp pulpboard, the aqueous solution or the organic solvent solution that can directly spray above prescription are also dry on pulpboard, or mix with paper pulp among directly adding stock tank;
When copying the system sheet paper products, can adopt following several method:
A) add stock tank
B) page dipping
C) page coating or surface spraying
Get final product by the dry page of normal drying process
(4) paper is carried out the gas chemistry modification and handle organic acid anhydride 0.01～0.5%, buffer ammonium salt 0.01～0.5%, 95～140 ℃ of temperature, 5～25 minutes time.
2. according to described technology of claim 1 and prescription, it is characterized in that being applicable to fast growing wood bleaching high-yield pulp and join and copy product.
3. according to described technology of claim 1 and prescription, it is characterized in that SOME METHODS can be separately or fit applications according to different requirements.
4. according to claim 1,2,3 described technology and prescriptions, its feature goes for paper pulp, pulpboard, white paper and board product and improves occasions such as suppressing the brightness reversion performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114433 CN1288086A (en) | 1999-09-10 | 1999-09-10 | Processing art for inhibiting turning to yellow of high yield baeached pulp and and paper products contg. same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114433 CN1288086A (en) | 1999-09-10 | 1999-09-10 | Processing art for inhibiting turning to yellow of high yield baeached pulp and and paper products contg. same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1288086A true CN1288086A (en) | 2001-03-21 |
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ID=5277519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99114433 Pending CN1288086A (en) | 1999-09-10 | 1999-09-10 | Processing art for inhibiting turning to yellow of high yield baeached pulp and and paper products contg. same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1288086A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101326327B (en) * | 2005-12-14 | 2012-09-12 | 纳尔科公司 | Method of decreasing the rate of photoyellowing |
| CN115029956A (en) * | 2022-06-10 | 2022-09-09 | 万国纸业太阳白卡纸有限公司 | Card paper and preparation method thereof |
| CN115094667A (en) * | 2022-08-05 | 2022-09-23 | 深圳百市达生物技术有限公司 | Additive for inhibiting plant fiber yellowing |
-
1999
- 1999-09-10 CN CN 99114433 patent/CN1288086A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101326327B (en) * | 2005-12-14 | 2012-09-12 | 纳尔科公司 | Method of decreasing the rate of photoyellowing |
| CN115029956A (en) * | 2022-06-10 | 2022-09-09 | 万国纸业太阳白卡纸有限公司 | Card paper and preparation method thereof |
| CN115094667A (en) * | 2022-08-05 | 2022-09-23 | 深圳百市达生物技术有限公司 | Additive for inhibiting plant fiber yellowing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |